First thing to check is if your Image has support for Camera (OV5640), that means the script.bin has OV5640 setup in it.
I believe the MATE Image with the right bpi-tools will load OV5640/CSI at the boot time.
There is no sun8i_csi module and a load of the following modules would suffice to have camera working IF script.bin has ov5640 configuration:
You can check that after loading the two modules:
if you don’t see error then you have success and can use your camera